Quadruple pump.



No. 7|0,4'l6. Patented Oct. 7, I902.

w. H. BLAIR.

QUADBUPLE PUMP.

(Application fllgd Nov. 19, 1900.) (llo Modal.) 2 Sheets-Shoat l.

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No. name. Paiented Oct. 7, I902.

vw. H. BLAIR.

QUADBUPLE PUMP.

(Application filed 1m 19, 1900.

(lo mm.) 2 Sheets-Sheet 2.

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UNITED STATES PATENT OFFICE.

WILLIAM H. BLAIR, OF ERIE, PENNSYLVANIA.

QUADRUPLE PUMP. V

SPECIFICATION forming part of Letters Patent No. 710,416, dated October '7, 1902.

Application filed November 19,1900- Serial No. 36,958- (No model.)

To aZZ whom it may concern:

Be it known that I, WILLIAM H. BLAIR, a citizen of the United States, residing at the city of Erie, in the county of Erie and State of Pennsylvania, have invented a new and useful Quadruple Pump for Use in Medical and Surgical Work, of which the following is a specification.

My invention relates to improvements in pumps used in medical and surgical work, where either a forced vacuum is required, as in cupping-glasses, breast-pumps, &c., or where a compressed-air force is required, as in spraying, atomizing, and dilating instruments, and also where both of these forces are used in combination or alternately, as when connected with a stomach-tube in washing out the stomach or with a catheter in washing out the bladder, used also when connected with trocar and cannula as an aspirator and injector for hydrocele and other dropsies. It is designed to employ the principles above explained in medical and surgical work generally. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a rear elevation of my invention, showing the position of the vacuum or compressed-air chamber in the center, with a double vacuum or suction air-pump on the right side and a double compressed-air pump on the left side. Fig. 2 is a cross-section on the line a I) in Fig.1. Figs. 3 and 4 are the piston-rods as they appear when removed from the pumps. Fig. 5 is an elevation showing the valves in section. Fig. 6 is the handle.

Each double pump has a single pistonrod with a handle in the middle and acup-shaped sucker-valve of leather at each end, as is shown in Figs. 3 and 4. In the vacuum-pump the mouths of the cup-shaped suckers are toward the center of the piston-rod, as in Fig. 3, but in the compressed-air pump the mouths of the suckers are turned toward the end of the piston-rod, as in Fig. 4-.

The pistons are put in place or removed from the pump by removing the screw-cap from top of pump. When the piston is in place, the handle (shown in Fig. 6) can be screwed into the piston-rod through the slot in the pump. The handles work free in the slots and when worked up and down in the slot operate the double pump.

The center chamber and the pumps are made of light brass or steel tubing about two feet in length and about two and one-half and one and one-fourth inches, respectively, in diameter, brazed into a metal base at the bottom and bound together near the top by a metal band, the top of each being closed by a screw-cap.

Each pump has two nipples, one just above the base and the other just beneath the screwcap at the top.

The center chamber has on its posterior side two double-nippled stop-cocks, so arranged that when the current in one nipple is free it is cut off in the other nipple, as is shown in Fig. 5. By turning the stop-cock O one-third of the way around it closes the com munication with one pump and opens it in the other.

The nipples on the pumps are connected with the corresponding nipples on the center chamber by means of a rubber tube B, containingvalves,(marked X on drawings.) The valves for the vacuum-pump are near the pump-nipple, and the valves for the forcepump are near the center-chamber nipple.

On the front of center chamber near the top is a single nipple -opening with stop-cock (marked Aon drawings) for attaching rubber tubing to be connected with a receiving-jar or any instrument used requiring either a forced vacuum or compressed-air force or where both forces are used in combination or alternately. It must be connected to the instrumentthroughareceiving-jarwhenliquids are to be dealt with.

I claim as my invention and desire to secure by Letters Patent 1. The combination, in a quadruple pump with a central chamber designed to have a fluid compressed therein or exhausted therefrom, of a double-acting suction-pump, a double-acting force-pump, and connections between said pumps and said chamber whereby either pump may cooperate with the chamber.

2. In a quadruple pump, the combination of a double-acting suction-pump and a doubleacting force-pump with a central chamber designed to have a fluid compressed therein or exhausted therefrom, with connections be- In testimony whereof I have signed my tween said pumps and said chamber so that name to this specification in the presence of communication between said chamber and two subscribing witnesses.

one pump is closed and communication be- WILLIAM H. BLAIR. 5 tween said chamber and the other pump is Witnesses:

opened by simply turning the stop-cock C LILLY M. DENCH,

one-third of the way around. MAMIE L. BLUM. 

